package cn.UML;

/**
 * @author: lizemin
 * @version: 1.0
 */
public class Demo {
    //这是一个main方法,是程序的入口
    public static void main(String[] args) {
        Teacher teacher = new Teacher();
        teacher.haveClass();
        Student student = new Student();
        student.listenClass();
        student.play();


    }
}
